Dusk
Open in tool →Slate blue with a copper accent — calm, professional, slightly editorial; suits consultancies and journals.
Color
#545f87
#545f87
hex
#545f87rgb
rgb(84, 95, 135)hsl
hsl(227, 23%, 43%)oklch
oklch(0.493 0.066 272)Closest name: Admiral Blue (#50647f)Relative luminance 0.1182
Colors that go with #545f87
Charcoal, Copper and Goldenrod lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.
Copper #b87333
shippedCopper is paired with #545f87 in 4 real palettes, including Dusk and Desert Road, as the accent — a combination designers have actually shipped, not a computed rotation.
Goldenrod #daa520
shippedGoldenrod is paired with #545f87 in 4 real palettes, including Open House and Sapphire & Gold, as the accent — a combination designers have actually shipped, not a computed rotation.
Medium Sea Green #3cb371
shippedMedium Sea Green is paired with #545f87 in 4 real palettes, including Fintech Trust and Indigo SaaS, as the accent — a combination designers have actually shipped, not a computed rotation.
Sage Green #9caf88
shippedSage Green is paired with #545f87 in 4 real palettes, including Graphite and Darkroom, as the lead colour — a combination designers have actually shipped, not a computed rotation.
Taupe #483c32
shippedTaupe is paired with #545f87 in 12 real palettes, including Dusk and Mid-Century, as the text colour against it — a combination designers have actually shipped, not a computed rotation.
Dark Olive Green #556b2f
complementaryDark Olive Green sits directly opposite #545f87 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Cadet Blue #5f9ea0
shippedCadet Blue is paired with #545f87 in 3 real palettes, including Dusk and Open House, as the supporting colour — a combination designers have actually shipped, not a computed rotation.
Real palettes that use #545f87
Tints & shades
Harmonies
Contrast
| #545f87 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 6.24:1 | pass | pass | fail |
|
Aaon black | 3.36:1 | fail | pass | fail |
Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #545f87 as the background.
Brands using this color
No public brand in the corpus uses this exact color yet. Extract a brand to add one.
Palettes built around it
mcpConnect your agent — build around #545f87
live endpointPoint any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.
endpoint
https://mcp.brandsweets.com/colors/mcpclaude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt
›analyze #545f87 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/545f87-9ca0c4-df7a4e-221f2d-e9eff1?lock=0&style=vibrantWant the agent to remember your picks and write them into a living brand? Create a free BrandSweets workspace.
Machine-readable: color.md